Electricity-saving high-voltage distribution box

Abstract

The application discloses a power-saving high-voltage distribution box and belongs to the technical field of high-voltage distribution boxes. The power-saving high-voltage distribution box comprises a heat dissipation component, the heat dissipation component comprises a distribution box body, an electrically-conductive assembly for butt joint is arranged in the distribution box body, a buffer assembly for buffering the electrically-conductive assembly is arranged in the electrically-conductive assembly, and a heat dissipation assembly for heat dissipation is arranged in the distribution box body. An inner side closed sealing cavity is formed at a butt joint end and a terminal joint by relying on a sealing non-slip pad, an outer side is matched with an integrated sealing cover to form an outer layer protection, a dust screen cover and a sealing pad double-barrier separate external dust and humid water vapor from invading the inside of the sealing cavity, effectively preventing the oxidation and dirt accumulation of an electrically-conductive contact surface from causing the contact resistance to become large, and meanwhile, a sealing cover side wall inclined heat dissipation micro-pore is matched with a top one-way air permeation valve to form a sandwiched micro-circulation air cooling channel. The temperature difference formed by the heating of a busbar is utilized to realize passive natural convection heat dissipation, and the terminal outer wall can be cooled without additional energy consumption.

Description

Technical Field

[0001] This invention relates to the field of high-voltage distribution box technology, and more specifically, to an energy-saving high-voltage distribution box. Background Technology

[0002] High-voltage distribution boxes, as core hub equipment in industrial power distribution systems such as mining, chemical, and metallurgical industries, undertake the functions of high-voltage power disconnection, distribution, and line protection. Busbar terminals and moving and stationary contacts are key structures for power transmission in distribution boxes, and their contact performance directly determines the energy consumption level and operational reliability of the power distribution system. With the continuous tightening of industrial energy conservation control standards, loss reduction, maintenance-free operation, and adaptive energy-saving operation of power distribution systems have become the core development direction for the upgrading and transformation of high-voltage distribution boxes. How to optimize the design from three aspects—conductive connection structure, sealing protection and heat dissipation, and intelligent start-stop of auxiliary circuits—to reduce contact Joule losses and useless standby energy consumption is a technical direction that urgently needs to be solved in the current research and development of high-voltage power distribution equipment.

[0003] Traditional high-voltage distribution boxes have auxiliary circuits such as cooling fans, monitoring instruments, and operation indicator lights that are always energized. Regardless of whether the equipment is running under no-load, light-load, or full-load conditions, the auxiliary components are always energized and in standby mode. Under most operating conditions, the distribution box is under light-load or no-load for a long period of time, and the busbar generates very little heat, so there is no need for forced air cooling. The fans run continuously without load, resulting in a large amount of ineffective power consumption. The no-load standby loss of the entire cabinet exists year-round. After a large number of power distribution equipment are networked, the problem of accumulated power waste becomes prominent. Moreover, conventional cabinets lack passive self-circulating heat dissipation structures. Under low-temperature conditions, they can only rely on the continuous operation of fans for heat dissipation, which cannot achieve passive natural cooling, further amplifying the waste of energy.

[0004] In view of this, we propose an energy-saving high-voltage distribution box. Summary of the Invention

[0005] Technical problem to be solved: The purpose of this invention is to provide an energy-saving high-voltage distribution box, which solves the technical problems mentioned in the background art.

[0006] Technical solution: The present invention provides an energy-saving high-voltage distribution box, including a heat dissipation component, which includes a distribution box body, a conductive component for docking is provided inside the distribution box body, a buffer component for buffering the conductive component is provided inside the conductive component, and a heat dissipation component for heat dissipation is provided inside the distribution box body. The opening assembly includes a knife switch assembly disposed inside the main body of the distribution box for opening and closing the functional compartment. The main body of the distribution box is provided with a current sensing assembly for adjusting the moving knife switch. The main body of the distribution box includes a distribution box shell, and the interior of the distribution box shell is provided with a functional compartment. The interior of the distribution box shell is provided with an upper busbar and a lower busbar, and the upper busbar is located above the lower busbar.

[0007] As an optional solution to the technical solution of this invention, the conductive component includes a mating end disposed at the top of the lower busbar. A sealing anti-slip pad is provided at the end of the mating end near the lower busbar, and an annular grease reservoir is provided at the end of the mating end away from the lower busbar. The annular grease reservoir is filled with high-pressure heat-resistant conductive grease and has an anti-overflow baffle inside. A terminal is provided at the bottom of the upper busbar, and a first buffer groove is provided inside the terminal. A mating unit is slidably connected inside the first buffer groove, and a first elastic element is provided inside the first buffer groove.

[0008] As an optional solution of the technical solution in this invention document, the sealing anti-slip pad is sleeved on the docking end, the anti-overflow baffle is located on the side of the high-pressure heat-resistant conductive grease away from the lower busbar, the anti-overflow baffle is ring-shaped, the docking end extends through the bottom of the terminal to the interior of the terminal, the side of the docking end away from the lower busbar abuts against the docking unit, and the side of the docking unit away from the docking end is elastically connected to the inner wall of the first buffer groove through the first elastic element.

[0009] By adopting the above technical solution, high-pressure heat-resistant conductive grease can be used to fill the gaps on the mating surfaces.

[0010] As an optional solution of the technical solution in this invention document, the buffer assembly includes a second buffer groove formed on the inner wall of the terminal, a plurality of abutting blocks are slidably connected inside the second buffer groove, a sliding plate is provided on the side of the abutting block, a first sliding groove is formed on the side of the abutting block away from the sliding plate, a second elastic member is provided inside the second buffer groove, a disc spring is provided inside the second elastic member, and a guide positioning surface is provided at one end of the abutting block. The sliding plate is slidably connected to the first sliding groove, and several sliding plates are combined to form an annular sleeve. The docking end is located between several sliding plates. The abutting block is elastically connected to the inner wall of the second buffer groove through a second elastic element and a disc spring. The guide positioning surface is located at the end of the abutting block away from the docking unit, and the guide positioning surface is located on the side where the abutting blocks are close to each other.

[0011] By adopting the above technical solution, the buffer component can adapt to the thermal expansion and contraction of the docking end.

[0012] As an optional solution to the technical solution of this invention, the heat dissipation component includes a sealing cover disposed on the inner wall of the distribution box housing. Several heat dissipation micro-holes are provided on both sides of the sealing cover, and dustproof mesh covers are provided on both sides of the heat dissipation micro-holes. A one-way vent valve is provided on the top of the sealing cover. Several guide grooves are provided on the inner wall of the sealing cover. Several leakage funnels are opened at the bottom of the inner wall of the sealing cover. A one-way liquid valve is provided inside each leakage funnel. A drain rack is provided at the bottom of the sealing cover, and a drain groove is opened inside the drain rack.

[0013] As an optional solution to the technical solution of this invention, the leakage funnel is located below the guide channel, the drainage channel is located below the leakage funnel, the dustproof mesh cover is set on the outside of several heat dissipation micro-holes, the bottom of the drainage rack is fixedly connected to the inner wall of the distribution box shell, the sealing cover is sealed to the inner wall of the distribution box shell, the docking end and the terminal are both located inside the sealing cover, the upper busbar and the lower busbar both extend through the inner wall of the sealing cover to the upper and lower sides of the sealing cover, the functional compartment is located on the side of the docking end away from the sealing cover, and the heat dissipation micro-holes are aligned with the terminal.

[0014] By adopting the above technical solution, the heat dissipation component can generate self-circulating air cooling when the sealed cavity heats up.

[0015] As an optional solution to the technical solution of this invention, the knife switch assembly includes a heat-conducting block fixedly connected to the top of the sealing cover, a plurality of temperature-sensing and heat dissipation fins fixedly connected to the bottom of the heat-conducting block, a memory metal rod fixedly connected to the top of the heat-conducting block, a support frame provided on the top of the sealing cover, a lever rotatably connected to the support frame, a functional compartment knife switch provided on the top of the support frame, and a movable knife switch rotatably connected to the functional compartment knife switch.

[0016] As an optional solution to the technical solution of this invention, the lever is V-shaped, the end of the memory metal rod away from the heat-conducting block abuts against the side of the lever near the support frame, the end of the movable gate away from the functional compartment gate is hinged to the end of the lever away from the memory metal rod, the functional compartment gate is connected to the functional compartment, the width of the lever is greater than the width of the memory metal rod, and the end of the lever near the memory metal rod is shorter than the end of the lever near the movable gate.

[0017] By adopting the above technical solution, the memory metal rod can be set to adjust the moving switch according to the temperature of the interlayer.

[0018] As an optional solution to the technical solution of this invention, the current sensing component includes silicon steel magnetic yokes disposed on both sides of the functional compartment switch, a through-core excitation coil sleeved on the upper busbar, a second sliding groove opened at the bottom of the support frame, a movable armature slidably connected inside the second sliding groove, a third elastic element disposed inside the second sliding groove, a piston rod fixedly connected to the end of the lever away from the shape memory metal rod, a cavity opened inside the support frame, and a fourth elastic element disposed inside the cavity.

[0019] As an optional solution to the technical solution of this invention, one end of the silicon steel magnetic yoke is located inside the through-core excitation coil, the movable armature is elastically connected to the inner wall of the second slide groove through a third elastic element, both ends of the movable armature extend through the inner wall of the second slide groove to the bottom of the silicon steel magnetic yoke, the two ends of the movable armature are respectively located on both sides of the memory metal rod, the side of the movable armature near the memory metal rod abuts against the side of the lever near the support frame, the piston rod is located on the side of the lever near the support frame, the piston rod extends through the surface of the support frame to the interior of the cavity, and the piston rod is elastically connected to the inner wall of the cavity through a fourth elastic element.

[0020] By adopting the above technical solution, a current sensing component can be set to adjust the moving switch according to changes in current.

[0021] Beneficial effects: One or more technical solutions provided in this invention have at least the following technical effects or advantages: 1. The first elastic element, in conjunction with the docking unit, achieves axial elastic compensation at the docking end. The second elastic element, together with the disc spring, forms a double-layer composite elastic structure. Radial clamping and limiting are achieved with the help of the guide positioning surface of the abutment block. During assembly, the guide positioning surface automatically guides and centers, ensuring uniform contact between the docking end and the end face of the docking unit. When the busbar expands due to heat, the first elastic element adaptively absorbs axial deformation, and the second elastic element, in conjunction with the disc spring, buffers radial expansion. The anti-creep and high-temperature resistance of the disc spring can compensate for the elasticity decay of the spring during long-term high-temperature operation. When the busbar contracts at low temperatures, the elastic element synchronously rebounds to compensate for the pressure. Throughout the process, gaps in the contact surface caused by thermal expansion and contraction and equipment vibration are avoided. In addition, the high-pressure heat-resistant conductive grease in the annular grease reservoir fills the micro-gaps in the metal, and the anti-overflow and edge-blocking restrain the conductive grease from flowing out or carbonizing and losing, continuously optimizing the contact resistance and significantly reducing the heat power loss at the busbar connection. This achieves power saving from the power supply head and solves the drawbacks of the increase in contact resistance and rebound of heat loss in the later stages of traditional terminal blocks.

[0022] 2. The sealing anti-slip pad forms an inner sealed cavity at the junction of the mating end and the terminal, and the outer side is equipped with an integrated sealing cover to form an outer layer of protection. The dustproof mesh cover and sealing gasket double block external dust and moisture from entering the sealed cavity, effectively preventing the oxidation and dirt accumulation on the conductive contact surface from causing an increase in contact resistance. At the same time, the oblique heat dissipation micro-holes on the side wall of the sealing cover, together with the top one-way vent valve, form a sandwich micro-circulation air cooling channel. The temperature difference generated by the heating of the busbar is used to achieve passive natural convection heat dissipation, which can cool the outer wall of the terminal without additional energy consumption.

[0023] 3. The inner wall guide groove, leakage funnel, one-way liquid valve and drain rack of the sealing cover form a complete condensation discharge structure. The water condensed in the interlayer is collected and discharged to the water collection area of ​​the box. The condensation cannot contaminate the conductive parts, which greatly reduces the frequency of opening the cover for cleaning and maintenance, saves the later manual operation and maintenance costs, and is suitable for harsh industrial power distribution environments with high dust and high humidity such as mines and chemical plants.

[0024] 4. A current sensing mechanism consisting of a through-core excitation coil and a movable armature, and a temperature sensing mechanism consisting of a memory metal rod and temperature-sensing heat dissipation fins are set up. The two structures are connected in parallel to output driving force. Relying on the stroke amplification characteristics of the V-shaped lever, they share a common power input end, so that the auxiliary circuit can be started under any condition of current exceeding the standard or ambient temperature exceeding the standard, and the auxiliary power can be automatically disconnected when both light load and low temperature conditions are met. Under the conditions of no load, light load and low temperature, the knife switch disconnects to cut off the power supply to all auxiliary components such as fans, instruments and indicator lights, avoiding the power consumption of the distribution box in standby mode all day long. After the equipment is heavily loaded and heated, the switch is automatically closed to start the heat dissipation monitoring of auxiliary components, taking into account both the safety of equipment operation and energy saving when idle. Compared with traditional distribution cabinets that are always in standby mode, the long-term energy saving benefits are significant.

[0025] 5. By using a fourth elastic element to form a built-in time-delay damping component, when the load and ambient temperature fluctuate slightly at the critical threshold, the slight disturbance displacement generated by the armature and the memory metal rod, after being amplified by the lever, still cannot break through the preset damping resistance. The switch maintains its original open / closed state, avoiding frequent opening and closing of the auxiliary circuit switch causing arcing and burning of the contacts, and frequent starting and stopping of the cooling fan causing mechanical fatigue damage. This reduces the cost of component replacement, avoids the safety hazards caused by contact arcing, and significantly extends the service life of auxiliary components such as the switch and the fan.

[0026] 6. The cooling fan automatically starts and stops based on the cabinet temperature and bus load current. When the equipment is at a low temperature and under light load and does not require cooling, the fan is powered off and stops. Forced air cooling is only automatically started when the equipment overheats. This eliminates the redundant power consumption mode of the traditional distribution cabinet fan that is constantly powered on for cooling. Cooling on demand further reduces unnecessary energy consumption. At the same time, relying on the dual-layer cooling mode of passive sandwich air cooling + active fan cooling, it effectively controls the temperature rise of the cabinet and bus, delays insulation aging, and improves the operating safety factor of the high-voltage distribution box. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of an energy-saving high-voltage distribution box.

[0029] Figure 2 This is a cross-sectional structural diagram of the main body of the power distribution box in an energy-saving high-voltage distribution box.

[0030] Figure 3 This is a cross-sectional schematic diagram of the heat dissipation components in an energy-saving high-voltage distribution box.

[0031] Figure 4 For energy-saving high-voltage distribution boxes Figure 3 Enlarged structural diagram at point A in the middle.

[0032] Figure 5 This is a cross-sectional schematic diagram of the buffer component in an energy-saving high-voltage distribution box.

[0033] Figure 6 This is a cross-sectional schematic diagram of the disconnector assembly in an energy-saving high-voltage distribution box.

[0034] Figure 7 For energy-saving high-voltage distribution boxes Figure 6 Enlarged structural diagram at point B.

[0035] Figure 8 This is a cross-sectional structural diagram of the current sensing component in an energy-saving high-voltage distribution box.

[0036] Figure 9 This is a three-dimensional structural diagram of the disconnector assembly in an energy-saving high-voltage distribution box.

[0037] Figure 10 This is a three-dimensional structural diagram of the conductive components in an energy-saving high-voltage distribution box.

[0038] Figure 11 This is a three-dimensional structural diagram of the buffer component in an energy-saving high-voltage distribution box.

[0039] Explanation of the numbers in the diagram: 10. Main body of the distribution box; 101. Outer shell of the distribution box; 102. Functional compartment; 103. Upper busbar; 104. Lower busbar; 11. Conductive component; 111. Connecting end; 112. Sealing anti-slip pad; 113. Annular grease reservoir; 114. High-pressure heat-resistant conductive grease; 115. Anti-overflow baffle; 116. Terminal; 117. First buffer groove; 118. Connecting unit; 119. First elastic element; 12. Buffer group Components; 121. Second buffer groove; 122. Abutment block; 123. Slide plate; 124. First slide groove; 125. Second elastic element; 126. Disc spring; 127. Guide positioning surface; 13. Heat dissipation assembly; 131. Sealing cover; 132. Heat dissipation micropores; 133. Dustproof mesh cover; 134. One-way vent valve; 135. Flow guide groove; 136. Leakage funnel; 137. One-way liquid valve; 138. Drainage rack; 139. Drainage trough; 20. Knife switch assembly; 201. Temperature measuring and heat dissipation fins; 202. Heat-conducting block; 203. Memory metal rod; 204. Lever; 205. Support frame; 206. Functional compartment knife switch; 207. Moving knife switch; 21. Current sensing assembly; 211. Silicon steel magnetic yoke; 212. Through-core excitation coil; 213. Movable armature; 214. Second slide groove; 215. Third elastic element; 216. Piston rod; 217. Cavity; 218. Fourth elastic element. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a link; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] Reference Figures 1 to 11 This invention provides an energy-saving high-voltage distribution box, including a heat dissipation component. The distribution box body 10 includes a conductive component 11 for docking, a buffer component 12 for buffering the conductive component 11, and a heat dissipation component 13 for heat dissipation. The opening assembly includes a knife switch assembly 20 disposed inside the main body 10 of the distribution box for opening and closing the functional compartment. The main body 10 of the distribution box is provided with a current sensing assembly 21 for adjusting the moving knife switch 207. The main body 10 of the distribution box includes a distribution box shell 101. The interior of the distribution box shell 101 is provided with a functional compartment 102. The interior of the distribution box shell 101 is provided with an upper busbar 103 and a lower busbar 104. The upper busbar 103 is located above the lower busbar 104.

[0044] Reference Figures 3 to 11 This invention provides an energy-saving high-voltage distribution box. The conductive component 11 includes a docking end 111 disposed on the top of the lower busbar 104. A sealing anti-slip pad 112 is disposed at the end of the docking end 111 near the lower busbar 104, and an annular grease reservoir 113 is provided at the end of the docking end 111 away from the lower busbar 104. High-voltage heat-resistant conductive grease 114 is disposed inside the annular grease reservoir 113, and an anti-overflow baffle 115 is disposed inside the annular grease reservoir 113. A terminal 116 is disposed at the bottom of the upper busbar 103. A first buffer groove 117 is disposed inside the terminal 116. A docking unit 118 is slidably connected inside the first buffer groove 117, and a first elastic element 119 is disposed inside the first buffer groove 117. A sealing anti-slip pad 112 is fitted onto the mating end 111. An anti-overflow baffle 115 is located on the side of the high-pressure heat-resistant conductive grease 114 away from the lower busbar 104. The anti-overflow baffle 115 is annular in shape. The mating end 111 extends through the bottom of the terminal 116 and into the interior of the terminal 116. The side of the mating end 111 away from the lower busbar 104 abuts against the mating unit 118. The side of the mating unit 118 away from the mating end 111 is elastically connected to the inner wall of the first buffer groove 117 through the first elastic member 119. The inner wall of the terminal 116 and the mating end 111 form a sealed cavity.

[0045] Reference Figures 4 to 11 This invention provides an energy-saving high-voltage distribution box. The buffer assembly 12 includes a second buffer groove 121 opened on the inner wall of the terminal 116. A plurality of abutment blocks 122 are slidably connected inside the second buffer groove 121. A sliding plate 123 is provided on the side of the abutment block 122. A first sliding groove 124 is opened on the side of the abutment block 122 away from the sliding plate 123. A second elastic member 125 is provided inside the second buffer groove 121. A disc spring 126 is provided inside the second elastic member 125. A guide positioning surface 127 is provided at one end of the abutment block 122. The sliding plate 123 is slidably connected to the first sliding groove 124. Several sliding plates 123 are combined to form an annular sleeve. The docking end 111 is located between several sliding plates 123. The abutting block 122 is elastically connected to the inner wall of the second buffer groove 121 through the second elastic element 125 and the disc spring 126. The guide positioning surface 127 is located at the end of the abutting block 122 away from the docking unit 118. The guide positioning surface 127 is located on the side of the abutting blocks 122 that are close to each other. The first elastic element 119, in conjunction with the docking unit 118, achieves axial elastic compensation at the docking end 111. The second elastic element 125 and the disc spring 126 form a double-layer composite elastic structure. Radial clamping and limiting are achieved by the guide positioning surface 127 of the abutment block 122. During assembly, the guide positioning surface 127 automatically guides and centers, ensuring uniform contact between the docking end 111 and the end face of the docking unit 118. When the busbar expands due to heat, the first elastic element 119 adaptively absorbs axial deformation, the second elastic element 125, in conjunction with the disc spring, buffers radial expansion, and the disc spring 126 resists creep. The high-temperature resistance can compensate for the spring force decay caused by long-term high-temperature operation. When the busbar shrinks at low temperature, the elastic element rebounds synchronously to compensate for the pressure. Throughout the process, it avoids the gaps in the contact surface caused by thermal expansion and contraction and equipment vibration. In addition, the high-pressure heat-resistant conductive grease 114 in the annular grease reservoir 113 fills the metal micro gaps, and the anti-overflow baffle 115 restricts the conductive grease from flowing out and carbonizing. It continuously optimizes the contact resistance and greatly reduces the heat power loss at the busbar connection. It saves electricity from the power supply head and solves the drawbacks of the traditional terminal block 116 in the later stage of use, such as the increase in contact resistance and the rebound of heat loss.

[0046] Reference Figures 2 to 8This invention provides an energy-saving high-voltage distribution box. The heat dissipation component 13 includes a sealing cover 131 disposed on the inner wall of the distribution box shell 101. Both sides of the sealing cover 131 are provided with a plurality of heat dissipation micro holes 132. Both sides of the heat dissipation micro holes 132 are provided with dustproof mesh covers 133. The top of the sealing cover 131 is provided with a one-way vent valve 134. The inner wall of the sealing cover 131 is provided with a plurality of guide grooves 135. The bottom of the inner wall of the sealing cover 131 is provided with a plurality of liquid leakage funnels 136. The inside of the liquid leakage funnels 136 is provided with a one-way liquid valve 137. The bottom of the sealing cover 131 is provided with a drain rack 138. The inside of the drain rack 138 is provided with a drain groove 139. The drain hopper 136 is located below the guide channel 135, the drain trough 139 is located below the drain hopper 136, the dustproof mesh cover 133 is set on the outside of several heat dissipation micro holes 132, the bottom of the drain rack 138 is fixedly connected to the inner wall of the distribution box shell 101, the sealing cover 131 is sealed to the inner wall of the distribution box shell 101, the docking end 111 and the terminal 116 are both located inside the sealing cover 131, the upper busbar 103 and the lower busbar 104 both penetrate the inner wall of the sealing cover 131 and extend to the upper and lower sides of the sealing cover 131, the functional compartment 102 is located on the side of the docking end 111 away from the sealing cover 131, the heat dissipation micro holes 132 are aligned with the terminal 116, and there is a sandwich between the inner wall of the sealing cover 131 and the outer wall of the terminal 116; The sealing anti-slip pad 112 forms an inner sealed cavity at the joint between the mating end 111 and the terminal 116. The outer side is equipped with an integrated sealing cover 131 to form an outer layer of protection. The dustproof mesh cover 133 and the sealing pad doubly block external dust and moisture from entering the sealed cavity, effectively preventing the contact resistance from increasing due to oxidation and dirt accumulation on the conductive contact surface. At the same time, the oblique heat dissipation micro-holes 132 on the side wall of the sealing cover 131, together with the top one-way vent valve 134, form a sandwich micro-circulation air-cooling channel. The temperature difference generated by the heating of the busbar is used to achieve passive natural convection heat dissipation, which can cool the outer wall of the terminal without additional energy consumption.

[0047] Reference Figures 2 to 9 This invention provides an energy-saving high-voltage distribution box. The knife switch assembly 20 includes a heat-conducting block 202 fixedly connected to the top of the sealing cover 131. Several temperature-sensing heat dissipation fins 201 are fixedly connected to the bottom of the heat-conducting block 202. A memory metal rod 203 is fixedly connected to the top of the heat-conducting block 202. A support frame 205 is provided on the top of the sealing cover 131. A lever 204 is rotatably connected to the support frame 205. A functional compartment knife switch 206 is provided on the top of the support frame 205. A movable knife switch 207 is rotatably connected to the functional compartment knife switch 206. The lever 204 is V-shaped. The end of the memory metal rod 203 away from the heat-conducting block 202 abuts against the side of the lever 204 near the support frame 205. The end of the movable switch 207 away from the function compartment switch 206 is hinged to the end of the lever 204 away from the memory metal rod 203. The function compartment switch 206 is connected to the function compartment 102. The width of the lever 204 is greater than the width of the memory metal rod 203. The end of the lever 204 near the memory metal rod 203 is shorter than the end of the lever 204 near the movable switch 207.

[0048] Reference Figures 2 to 9 This invention provides an energy-saving high-voltage distribution box. The current sensing component 21 includes silicon steel magnetic yokes 211 disposed on both sides of the functional compartment switch 206, a through-core excitation coil 212 sleeved on the upper busbar 103, a second sliding groove 214 opened at the bottom of the support frame 205, a movable armature 213 slidably connected inside the second sliding groove 214, a third elastic element 215 disposed inside the second sliding groove 214, a piston rod 216 fixedly connected to one end of the lever 204 away from the shape memory metal rod 203, a cavity 217 opened inside the support frame 205, and a fourth elastic element 218 disposed inside the cavity 217. One end of the silicon steel magnetic yoke 211 is located inside the through-core excitation coil 212. The movable armature 213 is elastically connected to the inner wall of the second slide groove 214 through the third elastic member 215. Both ends of the movable armature 213 extend through the inner wall of the second slide groove 214 to the bottom of the silicon steel magnetic yoke 211. The two ends of the movable armature 213 are located on both sides of the shape memory metal rod 203. The side of the movable armature 213 near the shape memory metal rod 203 abuts against the side of the lever 204 near the support frame 205. The piston rod 216 is located on the side of the lever 204 near the support frame 205. The piston rod 216 extends through the surface of the support frame 205 to the inside of the cavity 217. The piston rod 216 is elastically connected to the inner wall of the cavity 217 through the fourth elastic member 218. The current sensing mechanism is composed of a through-core excitation coil 212 and a movable armature 213, while the temperature sensing mechanism is composed of a memory metal rod 203 and a temperature-sensing heat sink 201. The two structures are connected in parallel to output driving force. Relying on the stroke amplification characteristic of the V-shaped lever 204, they share a common power input end, so that the auxiliary circuit can be started under any condition of current exceeding the standard or ambient temperature exceeding the standard, and the auxiliary power can be automatically disconnected when both light load and low temperature conditions are met. Under the conditions of no load, light load and low temperature, the knife switch disconnects to cut off the power supply to all auxiliary components such as fans, instruments and indicator lights, avoiding the power consumption of the distribution box in standby mode all day long. After the equipment is heavily loaded and heated, the switch is automatically closed to start the auxiliary component heat dissipation monitoring, taking into account both equipment operation safety and idle energy saving. Compared with traditional distribution cabinets that are always on standby, the long-term energy saving benefits are significant.

[0049] This invention provides an energy-saving high-voltage distribution box, the working principle of which and its usage process are as follows: First, the mating end 111 is inserted into the terminal 116. During this process, the mating end 111 abuts against the guide positioning surface 127 on the abutment block 122, pressing the abutment block 122 to move it away from the mating end 111. This expands the inner diameter of the annular sleeve formed by the combination of several abutment blocks 122, allowing the mating end 111 to extend into it. During this process, the abutment block 122 presses against the second elastic element 125 and the disc spring 126. After the mating end 111 is inserted into the terminal 116, the mating end... The end of 111 will abut against the docking unit 118 and compress the first elastic member 119. At this time, the docking unit 118 will fit against the end of the docking end 111 under the action of the elastic force of the first elastic member 119, and the abutment block 122 will fit against the side wall of the docking end 111 under the action of the elastic force of the second elastic member 125 and the disc spring 126, applying a pressing force to it. Then the sealing cover 131 is sealed and installed on the outside of the terminal 116, wherein the third elastic member 215 and the fourth elastic member 218 are both in a compressed state. When the busbar is energized and heated under load, the mating end 111 will elongate axially and expand slightly radially. This causes the mating unit 118 to further adaptively compress the first elastic element 119 to absorb the axial elongation of the mating end 111. By increasing the elasticity, the mating end face is always fully fitted. The outer ring of the contact block 122 will expand radially with the mating end 111, further compressing the second elastic element 125 and the disc spring 126. While adapting to the thermal expansion of the mating end 111, the clamping force on the mating end 111 is increased. The high-pressure heat-resistant conductive grease 114 set in the annular grease reservoir 113 will continuously fill the gaps between the contact surfaces. The anti-overflow baffle 115 can lock the conductive medium and prevent the conductive grease from carbonizing or flowing due to the high voltage electric field and high temperature. It continuously lubricates and fills the small gaps between the contact surfaces, stabilizes the contact resistance over a long period of time, and reduces heat power loss. The sealing anti-slip pad 112 provided on the side of the mating end 111 seals the interface between the terminal 116 and the mating end 111, forming a sealed cavity between the terminal 116 and the mating end 111. When the heat generated by the mating end 111 is conducted through the sealed cavity wall to the outside of the terminal 116, i.e., the air in the interlayer between the sealing cover 131 and the terminal 116, the hot air in the interlayer rises and is discharged into the inner cavity of the distribution box through the one-way vent valve 134 on the top of the sealing cover 131. A negative pressure is generated in the interlayer, causing the room temperature cold air in the box to enter the interlayer through the heat dissipation micropores 132 with dustproof mesh cover 133, forming a... The zero-power automatic continuous micro-circulation air cooling system cools the outer wall of terminal 116. When the temperature difference inside the sealing cover 131 causes condensation, it will be guided downward along the guide groove 135 on the inner wall of the sealing cover 131 and flow into the drain trough 139 on the bottom drain rack 138 through the drain hopper 136 and the one-way liquid valve 137. Finally, it will be discharged into the water collection area set inside the distribution box shell 101. The dustproof mesh cover 133 and the sealing anti-slip pad 112 can block the contact between external dust, water vapor, and air and the metal contact surface, avoiding the situation where the contact resistance soars due to metal oxidation and dirt accumulation. During the aforementioned heat dissipation process, if the generated heat is greater than the dissipated heat, causing the air temperature inside the sealing cover 131 to rise to the phase change temperature of the memory metal rod 203, the temperature-sensing heat dissipation fins 201 collect ambient heat and conduct it to the memory metal rod 203 via the heat-conducting block 202, causing it to elongate axially due to heat, and its end simultaneously presses against the short rod of the lever 204; at the same time, when the bus load current increases, the magnetic field of the through-core excitation coil 212 will be enhanced, overcoming the elastic force of the third elastic element 215 and pulling the movable armature 213 in the second slide groove 214 towards the direction of the silicon steel yoke 211, and further compressing the third elastic element 215, and the end of the movable armature 213 will press against the short rod of the lever 204; This causes lever 204 to use the pivot on support frame 205 as a fulcrum, with the short arm bearing force and the long arm amplifying its stroke, driving the moving switch 207 to rotate towards the functional compartment switch 206. This causes the long arm to drive piston rod 216 to overcome the elastic force of the fourth elastic element 218, allowing piston rod 216 to slide within cavity 217, further compressing the fourth elastic element 218 and increasing its elastic force. This provides a delayed damping effect, buffering the instantaneous thrust caused by instantaneous impact current and short-term temperature rise. Only after the operating conditions remain stable and meet the standards can piston rod 216 completely overcome the damping resistance, causing the moving switch 207 to close with the functional compartment switch 206. This enables the auxiliary power supply circuit in functional compartment 102 to be connected, allowing the cooling fan, monitoring instruments, and status indicator lights to be powered on and put into operation simultaneously. The fan accelerates the heat dissipation inside the cabinet, suppressing overheating of the busbar and terminals. When load fluctuations and slight fluctuations in ambient temperature cause the bus current and cabinet temperature to change back and forth near the start-stop threshold, the movable armature 213 and the memory metal rod 203 will produce a small reciprocating extension and retraction displacement. After the stroke of the "V"-shaped lever 204 is amplified, the output thrust still cannot break through the time-delayed damping preset resistance composed of the fourth elastic element 218. The piston rod 216 will remain in the original position, so that the movable switch 207 will maintain the original closed state and will not frequently open and close with slight changes in parameters, thus avoiding repeated arcing and burning of the switch contacts and mechanical wear from frequent start-stop of the fan. When the load is disconnected, the bus current gradually returns to zero, the bus temperature drops, and the conductor contracts axially and radially. The docking unit 118 will slide and compensate synchronously under the action of elastic force. The contact block will be pushed inward by the second elastic element 125 and the disc spring 126 to hug the docking end 111 and continuously press the docking end face to prevent the bus from shrinking and causing a docking gap. Furthermore, as the bus current continues to decrease, the magnetic force of the through-core excitation coil 212 weakens, and the movable armature 213 retracts and resets under the action of the third elastic element 215, releasing the pressure on the lever; the temperature inside the cabinet gradually drops below the phase change temperature of the memory metal rod 203, and the memory metal rod 203 will cool and shrink, removing the pushing force; at the same time, the lever 204 loses all input driving force, and the piston rod 216 will reset downwards under the action of the fourth elastic element 218, thereby driving the moving switch 207 to automatically disconnect from the functional compartment switch 206, and all auxiliary components will be de-energized and shut down again, and the distribution box will return to the energy-saving state of no-load zero standby loss.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An energy-saving high-voltage distribution box, characterized in that: include The heat dissipation component includes a distribution box body (10), the distribution box body (10) is provided with a conductive component (11) for docking, the conductive component (11) is provided with a buffer component (12) for buffering the conductive component (11), and the distribution box body (10) is provided with a heat dissipation component (13) for heat dissipation. The opening assembly includes a knife switch assembly (20) disposed inside the main body (10) of the distribution box for opening and closing the functional compartment. The main body (10) of the distribution box is provided with a current sensing assembly (21) for adjusting the moving knife switch (207). The main body (10) of the distribution box includes a distribution box shell (101), and a functional compartment (102) is provided inside the distribution box shell (101). An upper busbar (103) and a lower busbar (104) are provided inside the distribution box shell (101), and the upper busbar (103) is located above the lower busbar (104).

2. The energy-saving high-voltage distribution box according to claim 1, characterized in that: The conductive component (11) includes a docking end (111) disposed on the top of the lower busbar (104). A sealing anti-slip pad (112) is provided at one end of the docking end (111) near the lower busbar (104). An annular grease reservoir (113) is provided at one end of the docking end (111) away from the lower busbar (104). High-pressure heat-resistant conductive grease (114) is provided inside the annular grease reservoir (113). An anti-overflow baffle (115) is provided inside the annular grease reservoir (113). A terminal (116) is provided at the bottom of the upper busbar (103). A first buffer groove (117) is provided inside the terminal (116). A docking unit (118) is slidably connected inside the first buffer groove (117). A first elastic element (119) is provided inside the first buffer groove (117).

3. The energy-saving high-voltage distribution box according to claim 2, characterized in that: The sealing anti-slip pad (112) is fitted on the docking end (111). The anti-overflow baffle (115) is located on the side of the high-pressure heat-resistant conductive grease (114) away from the lower busbar (104). The anti-overflow baffle (115) is ring-shaped. The docking end (111) extends through the bottom of the terminal (116) to the interior of the terminal (116). The side of the docking end (111) away from the lower busbar (104) abuts against the docking unit (118). The side of the docking unit (118) away from the docking end (111) is elastically connected to the inner wall of the first buffer groove (117) through the first elastic element (119).

4. The energy-saving high-voltage distribution box according to claim 2, characterized in that: The buffer assembly (12) includes a second buffer groove (121) formed on the inner wall of the terminal (116). A plurality of abutment blocks (122) are slidably connected inside the second buffer groove (121). A sliding plate (123) is provided on the side of the abutment block (122). A first sliding groove (124) is formed on the side of the abutment block (122) away from the sliding plate (123). A second elastic element (125) is provided inside the second buffer groove (121). A disc spring (126) is provided inside the second elastic element (125). A guide positioning surface (127) is provided at one end of the abutment block (122). The sliding plate (123) is slidably connected to the first sliding groove (124). Several sliding plates (123) are combined to form an annular sleeve. The docking end (111) is located between several sliding plates (123). The abutting block (122) is elastically connected to the inner wall of the second buffer groove (121) through the second elastic element (125) and the disc spring (126). The guide positioning surface (127) is located at the end of the abutting block (122) away from the docking unit (118). The guide positioning surface (127) is located on the side where the abutting blocks (122) are close to each other.

5. The energy-saving high-voltage distribution box according to claim 4, characterized in that: The heat dissipation assembly (13) includes a sealing cover (131) disposed on the inner wall of the distribution box housing (101). Several heat dissipation micro-holes (132) are provided on both sides of the sealing cover (131). Dustproof mesh covers (133) are provided on both sides of the heat dissipation micro-holes (132). A one-way vent valve (134) is provided on the top of the sealing cover (131). Several guide grooves (135) are provided on the inner wall of the sealing cover (131). Several leakage funnels (136) are opened at the bottom of the inner wall of the sealing cover (131). A one-way liquid valve (137) is provided inside the leakage funnel (136). A drain rack (138) is provided at the bottom of the sealing cover (131). A drain groove (139) is opened inside the drain rack (138).

6. The energy-saving high-voltage distribution box according to claim 5, characterized in that: The drain hopper (136) is located below the guide channel (135), the drain trough (139) is located below the drain hopper (136), the dustproof mesh cover (133) is set on the outside of several heat dissipation micro holes (132), the bottom of the drain rack (138) is fixedly connected to the inner wall of the distribution box shell (101), the sealing cover (131) is sealed to the inner wall of the distribution box shell (101), the docking end (111) and the terminal (116) are both located inside the sealing cover (131), the upper busbar (103) and the lower busbar (104) both penetrate the inner wall of the sealing cover (131) and extend to the upper and lower sides of the sealing cover (131), the functional compartment (102) is located on the side of the docking end (111) away from the sealing cover (131), and the heat dissipation micro holes (132) are aligned with the terminal (116).

7. The energy-saving high-voltage distribution box according to claim 5, characterized in that: The knife switch assembly (20) includes a heat-conducting block (202) fixedly connected to the top of the sealing cover (131). Several temperature-sensing heat dissipation fins (201) are fixedly connected to the bottom of the heat-conducting block (202). A memory metal rod (203) is fixedly connected to the top of the heat-conducting block (202). A support frame (205) is provided on the top of the sealing cover (131). A lever (204) is rotatably connected to the support frame (205). A functional compartment knife switch (206) is provided on the top of the support frame (205). A movable knife switch (207) is rotatably connected to the functional compartment knife switch (206).

8. The energy-saving high-voltage distribution box according to claim 7, characterized in that: The lever (204) is V-shaped. The end of the memory metal rod (203) away from the heat-conducting block (202) abuts against the side of the lever (204) near the support frame (205). The end of the movable gate (207) away from the functional compartment gate (206) is hinged to the end of the lever (204) away from the memory metal rod (203). The functional compartment gate (206) is connected to the functional compartment (102). The width of the lever (204) is greater than the width of the memory metal rod (203). The end of the lever (204) near the memory metal rod (203) is shorter than the end of the lever (204) near the movable gate (207).

9. The energy-saving high-voltage distribution box according to claim 7, characterized in that: The current sensing component (21) includes silicon steel magnetic yokes (211) disposed on both sides of the functional compartment switch (206), a through-core excitation coil (212) sleeved on the upper busbar (103), a second slide groove (214) opened at the bottom of the support frame (205), a movable armature (213) slidably connected inside the second slide groove (214), a third elastic element (215) disposed inside the second slide groove (214), a piston rod (216) fixedly connected at the end of the lever (204) away from the memory metal rod (203), a cavity (217) opened inside the support frame (205), and a fourth elastic element (218) disposed inside the cavity (217).

10. The energy-saving high-voltage distribution box according to claim 9, characterized in that: One end of the silicon steel yoke (211) is located inside the through-core excitation coil (212). The movable armature (213) is elastically connected to the inner wall of the second slide groove (214) through a third elastic element (215). Both ends of the movable armature (213) extend through the inner wall of the second slide groove (214) to the bottom of the silicon steel yoke (211). The two ends of the movable armature (213) are located on both sides of the memory metal rod (203). The armature (213) abuts against the side of the memory metal rod (203) and the side of the lever (204) abuts against the side of the support frame (205). The piston rod (216) is located on the side of the lever (204) abutting the support frame (205). The piston rod (216) extends through the surface of the support frame (205) into the interior of the cavity (217). The piston rod (216) is elastically connected to the inner wall of the cavity (217) through a fourth elastic element (218).

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